Bip39 Word List Numbers. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of protection to the wallet that works along with your seed phrase to encrypt and guard your wallet. A https://mypresspage.com/story4217775/bip39-passphrase-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39